 
 (def docs-dir "docs")
 (def history-filename "symbol-history")
+(def changes-filename "changes")
 
 (defn get-symbol-history
   []

  (let [v-change (str "-" version)]
    (swap! history update-in [:version-map s] conj v-change)))

(defn update-history!
  [history version symbols]
  (let [[added removed _] (diff symbols (:symbols @history))]

    (doseq [s removed]
      (mark-symbol-removed! history version s))
    (swap! history assoc :symbols symbols)
    (write-changes! added removed version)
    (write-history! (:version-map @history) version)))

(defn attach-history
